| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| JG 238-2008 | English | 479 |
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Standard curing chamber for concrete
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JG 238-2008
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Basic data | Standard ID | JG 238-2008 (JG238-2008) | | Description (Translated English) | Standard curing chamber for concrete | | Sector / Industry | Building & Construction Industry Standard | | Classification of Chinese Standard | P97 | | Classification of International Standard | 91.220 | | Word Count Estimation | 12,112 | | Date of Issue | 2008-11-13 | | Date of Implementation | 2009-03-01 | | Older Standard (superseded by this standard) | JG 3037-1996 | | Quoted Standard | GB/T 2828.1; GB 4706.67; GB/T 50081 | | Regulation (derived from) | Bulletin of the Ministry of Housing and Urban No. 150 | | Issuing agency(ies) | Ministry of Housing and Urban-Rural Development of the People's Republic of China | | Summary | This standard specifies the concrete specimens standard curing box (hereinafter referred to as conservation tank) classification, specifications and marking, and the material conditions of use, requirements, test methods, inspection rules and signs, packaging and transport, storage and other requirements. This standard applies to standard curing of concrete specimens curing box. | JG 238-2008: Standard curing chamber for concrete---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Standard curing chamber for concrete
Book People's Republic of China building industry standards
Replacing JG 3037-1996
Concrete standard curing box
Posted.2008-11-13
2009-03-01 implementation
Ministry of Housing and Urban-Rural Development, People's Republic of China released
Foreword
This standard 5.1, 5.2.1,5.5,5.7 is mandatory, the rest are recommended.
Appendix A of this standard is an informative annex.
This standard is the revision of JG 3037-1996 "Concrete Standard Maintenance Box."
The main technical differences between this standard and JG 3037-1996 are as follows.
1) According to the provisions of the classification of the use of environmental conditions, divided into two kinds of outdoor and indoor;
2) The "effective volume by studio" classification, changed to "according to specifications";
3) In classification and marking, the groundwater cooling method has been canceled;
4) An increase of "in the conservation box should have temperature recorder and fault prompt device. Temperature recorder at least every 30min on the temperature record
Once recorded, the measurement error should not exceed 0.5 ℃. "The request;
5) Added the requirements of "maintenance room should be fog room" and "in the maintenance of outdoor should have relative humidity display device and fault prompt device."
6) increase the temperature of the curing box and cooling performance requirements;
7) increase the thermal insulation requirements of the curing box;
8) an increase of "electrical safety performance" should comply with the relevant provisions of GB 4706.67 requirements;
9) Increased reliability requirements;
10) Added test methods of "heating and cooling performance", "thermal insulation performance", "electrical safety performance" and "reliability"
11) Modify the inspection rules, test rules refer to the provisions of GB/T 2828.1 implementation;
12) An increase of information appendix A standard concrete box selection and conditions of use.
This standard proposed by the Ministry of Housing and Urban Standard and Design Institute.
This standard by the Ministry of Housing and Urban Construction Engineering standard technology focal point China Academy of Building Research centralized.
This standard drafting units. China Academy of Building Research, Hunan Construction Engineering Group Corporation, Tongji University, Hunan Provincial Construction Department of the new
Technology Promotion Center, Hunan University, China Railway Academy, Changsha Dehai Building Technology Development Co., Ltd., Ruyang County, Henan Province Construction
Bureau, Shanghai Civil Defense Construction Quality Supervision and Inspection Center.
The main drafters of this standard. Rong Jun Ming, Xiong Jun Fang, cold light, Li Qiling, Xuchang Duo, Tian Guanfei, Gong Jianqing, Wang Yuehua, Wang Yue,
Han Tiema, open ocean.
This standard from the date of implementation instead of JG 3037-1996.
Concrete standard curing box
1 Scope
This standard specifies the concrete specimen standard curing box (hereinafter referred to as curing box) classification, specifications and markings, conditions of use and materials, to
Requirements, test methods, inspection rules and signs, packaging and transportation, storage and other requirements.
This standard applies to concrete specimens conservation standard curing box.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. All dated references, which are subsequently owned
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to reach an agreement based on this standard research
Whether you can use the latest versions of these files. For undated references, the latest version applies to this standard.
GB/T 2828.1 Sampling procedures for inspection - Part 1. Acceptance quality limit (AQL) batch inspection sampling plan
GB 4706.67 Household and similar electrical appliances safety Particular requirements for aquariums and garden pond electrical appliances
GB/T 50081 ordinary concrete mechanical properties of test methods and standards
3 categories, specifications and markings
3.1 classification
3.1.1 according to the use of environmental classification
a) outdoor, symbol W;
b) indoors, symbol N.
3.1.2 by refrigeration classification
a) Compressor cooling, symbol Y;
b) Semiconductor cooling, symbol B.
3.2 specifications
Maintenance box specifications according to the cube standard specimen (150mm × 150mm × 150mm) storage group divided into 4 groups, 8 groups, 12 groups, 16
Group, 24 groups, 64 groups, 144 groups and 240 groups, with the symbols of 4, 8, 12, 16, 24, 64, 144, 240 respectively.
3.3 mark
3.3.1 Marking
Standard concrete box marked by the code, the use of the environment, refrigeration, specifications and the standard number five said.
Code. HB
Environment
cooling method
specifications
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This standard number
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